The 2500mAh 7.4V Battery for Huina models is specifically designed for HuiNa brand vehicles, including the NEW 1561/1562/1575/1592/1593 with SM-3P plug. With a high capacity and voltage, this Li-ion battery is suitable for advanced hobbyists aged 17 years and up. The battery provides long-lasting power for extended use, making it ideal for radio control enthusiasts looking to enhance their RC model vehicles with reliable and efficient performance. Made from high quality li ion cells. Please note. The Buyer assumes the risk of properly use li ion cells.